Topic summary
Transition boiling
Extracted from the Wikipedia article Nucleate boiling.
Departure from nucleate boiling
DNB is also known as transition boiling, unstable film boiling, and partial film boiling. For water boiling as shown on the graph, transition boiling occurs when the temperature difference between the surface and the boiling water is approximately 30 to 130 °C (54 to 234 °F) above the TS. This corresponds to the high peak and the low peak on the boiling curve. The low point between transition boiling and film boiling is the Leidenfrost point.